Tag Archives: neuroscience

Parapsychology and Subliminal Stimuli:

Subliminal stimuli in parapsychology refers to sensory inputs that are below the threshold of conscious perception but may still influence a person’s thoughts, feelings, or behaviors. These stimuli can include visual, auditory, or even tactile sensations that individuals are not consciously aware of but can affect their subconscious mind.

In parapsychology, there is interest in whether subliminal stimuli can trigger psychic phenomena, such as telepathy, precognition, or remote viewing, by affecting the subconscious mind in ways that transcend the conscious perception of the stimuli. Some researchers explore how these stimuli may influence the development of intuition, psychic abilities, or paranormal experiences.

One area of focus in parapsychology might involve investigating whether subliminal messages or signals could facilitate psychic functioning, or if certain stimuli may act as triggers for spontaneous psychic events. There are debates on whether these influences are purely psychological, linked to heightened awareness, or involve unexplained metaphysical processes.

Shervan K Shahhian

Photographic Memory, what is it exactly:

Photographic Memory, what is it exactly:

Photographic memory, also known as eidetic memory, refers to the ability to vividly recall images, sounds, or objects in great detail after only a brief exposure to them, without using any mnemonic devices. This phenomenon is rare and often misunderstood.

Here’s a breakdown of what it involves:

Key Characteristics of Photographic Memory:

  1. Visual Precision: A person with photographic memory can “see” an image or a scene in their mind as if it were still in front of them. They can describe the details with accuracy, even after the image is gone.
  2. Short-Term Recall: In most cases, the ability to retain such vivid details is short-lived, often lasting only a few seconds to minutes.
  3. No Need for Repetition: Unlike most people, who need repetition or association to memorize details, individuals with eidetic memory recall details effortlessly.

Misconceptions:

  • Not Truly “Photographic”: Despite the name, most instances of eidetic memory are not perfect reproductions of reality. People often recall images with some inaccuracies or omissions.
  • Rarity: True eidetic memory is exceedingly rare, especially in adults. It is more commonly observed in children and tends to diminish with age.

Difference Between Photographic Memory and Other Forms of Memory:

  • Eidetic Memory: Relies on the mind’s ability to visually retain images in great detail.
  • Highly Superior Autobiographical Memory (HSAM): A different and rare memory ability where individuals can recall events from their own lives with extraordinary clarity and accuracy, but it does not involve visual recall like eidetic memory.
  • Mnemonists: Some individuals achieve extraordinary memory feats through learned techniques and strategies, not through innate photographic abilities.

Is Photographic Memory Real?

While some people claim to have photographic memory, scientific evidence is mixed. Most researchers believe that while certain individuals may have exceptional memory abilities, the concept of a truly photographic memory is likely a myth. Memory recall is often influenced by interpretation, and even the most vivid memories are subject to change over time.

Let’s explore the research and techniques related to memory, including eidetic memory and ways to improve memory in general. Here’s an overview to get us started:

1. Research on Photographic Memory (Eidetic Memory)

  • Eidetic Memory in Children: Studies have found that some children display eidetic memory, but it tends to fade as they grow older. This may be linked to the way the brain processes information, which changes with age and cognitive development.
  • Neurological Basis: The exact mechanisms behind eidetic memory are unclear, but brain imaging suggests that areas like the visual cortex and regions associated with attention and retention may play key roles.
  • Criticisms of the Concept: Many researchers argue that eidetic memory is not “photographic” but rather an ability to recall visual details better than average individuals.

2. Memory Improvement Techniques

While true photographic memory might be a myth, anyone can train their brain to improve memory through practice and techniques:

A. Visualization Techniques

  • The Method of Loci (Memory Palace): Associate information with visual landmarks in a familiar location, such as imagining items on a journey through your home.
  • Chunking: Break information into smaller, manageable chunks (e.g., remembering a phone number as groups of 3–4 digits).
  • Association: Link new information with vivid images or stories to make it memorable.

B. Cognitive Training

  • Brain Games: Activities like puzzles, memory games, and strategy games improve working memory and mental agility.
  • Meditation and Focus Exercises: Mindfulness improves attention and reduces mental clutter, which aids memory retention.

C. Healthy Lifestyle

  • Diet: Foods rich in antioxidants, omega-3 fatty acids, and vitamins (like blueberries, nuts, and leafy greens) support brain health.
  • Exercise: Physical activity increases blood flow to the brain, enhancing cognitive function.
  • Sleep: Adequate sleep is critical for consolidating memories.

3. Unusual Memory Phenomena

  • Highly Superior Autobiographical Memory (HSAM): Only a handful of people have this ability to remember nearly every day of their lives in extraordinary detail.
  • Savant Syndrome: In rare cases, individuals with autism or neurological conditions exhibit incredible memory abilities, like recalling vast amounts of data.

4. Training to Mimic Photographic Memory

Though you can’t “create” a photographic memory, some practices can push memory performance closer to eidetic abilities:

  • Practice Eidetic Exercises: Look at a complex image for 30 seconds, close your eyes, and try to “see” it in your mind. Gradually increase the detail and complexity of the images.
  • Use Mnemonics: Create acronyms, rhymes, or songs to remember information.
  • Study in the Right Environment: Use well-lit, distraction-free spaces, and incorporate sensory aids like colors or diagrams.

Shervan K Shahhian

Prefrontal Cortex, Decision-Making and Regulation:

Prefrontal Cortex, Decision-Making and Regulation:

The prefrontal cortex (PFC) is a critical part of the brain involved in higher cognitive functions, particularly decision-making and self-regulation. Located in the front part of the frontal lobe, the PFC plays a central role in enabling humans to manage complex behaviors, control impulses, and plan for the future.

Here’s a breakdown of its roles in decision-making and regulation:

1. Decision-Making

The PFC is heavily involved in making both simple and complex decisions. It achieves this by integrating information from various parts of the brain:

  • Risk and Reward Assessment: The PFC evaluates potential outcomes, weighing risks versus rewards to guide choices. This involves interaction with the limbic system, particularly the amygdala and ventral striatum.
  • Cost-Benefit Analysis: The PFC helps calculate the trade-offs between immediate and long-term rewards, enabling delayed gratification and strategic thinking.
  • Flexibility and Adaptability: The PFC supports the ability to shift between different strategies or perspectives when circumstances change, a process called cognitive flexibility.
  • Inhibition of Impulses: It helps suppress impulsive responses that might lead to negative outcomes, favoring rational and well-thought-out actions.

2. Regulation

The PFC is central to self-regulation, which includes managing emotions, impulses, and behavior to align with goals or societal norms:

  • Emotional Regulation: The PFC helps modulate emotional responses by interacting with the amygdala and other regions of the brain. For instance, it can suppress fear or anger to maintain composure in stressful situations.
  • Executive Functioning: This includes planning, problem-solving, and managing attention to stay focused on tasks.
  • Impulse Control: The PFC helps inhibit immediate urges or desires that may conflict with long-term goals, like resisting unhealthy foods or controlling anger in arguments.
  • Social Behavior: The PFC enables understanding of social norms and empathy, guiding appropriate behavior in interpersonal contexts.

Key Subregions of the PFC

Different parts of the PFC specialize in specific functions:

  • Dorsolateral Prefrontal Cortex (DLPFC): Involved in working memory, planning, and reasoning.
  • Ventromedial Prefrontal Cortex (VMPFC): Plays a role in processing emotions and decision-making, particularly those involving personal and moral choices.
  • Orbitofrontal Cortex (OFC): Important for evaluating rewards and punishments, influencing decision-making based on outcomes.

Disruptions in PFC Function

When the PFC is impaired (due to injury, stress, or conditions like ADHD or depression), decision-making and self-regulation can be compromised:

  • Impaired Judgment: Difficulty evaluating risks or rewards accurately.
  • Impulsivity: Challenges in controlling immediate responses or emotions.
  • Poor Emotional Regulation: Heightened or inappropriate emotional reactions.

Understanding the PFC’s role is vital for fields like neuroscience, psychology, and behavioral therapy, as it helps explain and address issues related to decision-making and self-control.

Shervan K Shahhian

Brainspotting (BSP),Emotional parts of the Brain where Trauma,…:

Brainspotting (BSP),Emotional parts of the Brain where Trauma,…:

Brainspotting (BSP) is a powerful therapeutic approach designed to access and resolve deeply rooted trauma and emotional pain by tapping into the brain’s processing and memory systems. It is based on the premise that where a person looks (their visual field) can affect how they feel and access memories or emotions.

Emotional Parts of the Brain Involved in Trauma and BSP:

BSP targets specific areas of the brain associated with trauma and emotional processing:

Amygdala (Emotional Center):

  • The amygdala plays a key role in processing emotions, particularly fear and threat responses.
  • In trauma, the amygdala can become hyperactive, leading to heightened emotional reactions and difficulty regulating fear.

Hippocampus (Memory Integration):

  • Responsible for consolidating and organizing memories.
  • Trauma can disrupt the hippocampus, leading to fragmented memories and difficulty distinguishing past from present threats.

Prefrontal Cortex (Executive Function and Regulation):

  • Governs decision-making, impulse control, and emotional regulation.
  • Trauma can weaken the connection between the prefrontal cortex and other brain regions, reducing the brain’s ability to rationally process emotional triggers.

Thalamus (Sensory Relay):

  • Processes sensory information before sending it to other parts of the brain.
  • In trauma, sensory processing can become overwhelmed, leading to hypersensitivity or dissociation.

Brainstem (Survival Responses):

  • Controls fight, flight, or freeze responses.
  • Trauma often activates the brainstem, leading to automatic survival-oriented behaviors.

Default Mode Network (DMN):

  • This network is associated with self-referential thinking and internal processing.
  • Trauma can disrupt the DMN, leading to rumination, intrusive thoughts, and a distorted sense of self.

How BSP Works:

BSP uses “Brainspots”, specific points in the visual field that correspond to unresolved emotional or traumatic experiences stored in the brain. These spots are identified through the following steps:

Body Awareness:

  • The therapist helps the client focus on their physical sensations or emotional distress.

Eye Positioning:

The therapist guides the client’s gaze to different points in their visual field, identifying “brainspots” where emotional intensity increases or decreases.

Deep Processing:

By holding the gaze at the identified brainspot, the client accesses deeper layers of emotional and neurological processing, allowing the brain to integrate and resolve trauma.

Neuroplasticity:

BSP facilitates the brain’s natural capacity to reorganize and heal itself, promoting emotional regulation and resilience.

BSP and Emotional Healing:

BSP helps bypass the cognitive filters of the prefrontal cortex and directly access the subcortical brain, where trauma and emotions are stored. This enables the brain to process unresolved experiences more efficiently and with less resistance than traditional talk therapies. Over time, clients often experience a reduction in emotional reactivity, improved self-regulation, and an enhanced sense of well-being.

Shervan K Shahhian

Neuroscience-Informed Approach, what is it:

Neuroscience-informed approach, what is it:

A neuroscience-informed approach refers to the application of insights and knowledge derived from the field of neuroscience to guide and enhance various aspects of research, practice, or interventions in other disciplines. This approach recognizes the relevance of understanding the brain and its functions in addressing questions or challenges in fields such as psychology, education, medicine, and even business.

Key elements of a neuroscience-informed approach may include:

Understanding Brain Structure and Function: Incorporating knowledge about the structure and functions of the brain to inform decision-making, interventions, or strategies.

Neurobiological Basis of Behavior: Examining the neural underpinnings of human behavior, cognition, and emotions to gain a deeper understanding of these phenomena.

Brain Plasticity: Recognizing the brain’s capacity to change and adapt (neuroplasticity) in response to experiences, learning, and environmental influences.

Neuroscientific Techniques: Utilizing neuroscientific tools and techniques such as brain imaging (e.g., fMRI, EEG), neurophysiological measurements, and molecular biology methods to gather data and inform research.

Developmental Perspectives: Considering the impact of brain development across the lifespan on various aspects of human experience and behavior.

Clinical Applications: Applying neuroscience findings to improve the diagnosis, treatment, and prevention of neurological and psychiatric disorders.

Educational Strategies: Designing educational approaches that align with our understanding of how the brain learns and retains information, promoting effective teaching and learning methods.

Cognitive Enhancement: Exploring ways to enhance cognitive abilities through interventions informed by neuroscience, such as neurofeedback or brain stimulation techniques.

In essence, a neuroscience-informed approach aims to bridge the gap between the intricate workings of the brain and practical applications in different fields. This integration of neuroscience findings can lead to more effective and targeted interventions, strategies, or policies based on a deeper understanding of the biological foundations of human thought, behavior, and experience.

Shervan K Shahhian

Behavioral training and the connections in the Brain:

Behavioral training and the connections in the Brain:

Behavioral training refers to a type of learning process that involves modifying behavior through various methods and techniques. This can include classical conditioning, operant conditioning, observational learning, and other forms of behavior modification. When it comes to understanding the connections in the brain in the context of behavioral training, it’s helpful to explore the concept of neuroplasticity.

Neuroplasticity refers to the brain’s ability to reorganize itself by forming new neural connections throughout life. This process is influenced by experiences, learning, and environmental factors. Behavioral training can induce changes in the brain’s structure and function through the following mechanisms:

Synaptic Plasticity: Behavioral training can lead to changes in the strength and efficiency of synaptic connections between neurons. This is often associated with learning and memory processes.

Neurogenesis: Some forms of behavioral training have been linked to the generation of new neurons in certain regions of the brain, particularly the hippocampus, which is crucial for learning and memory.

Cortical Remapping: Training-induced changes may also involve the reorganization of cortical maps, where the representation of sensory or motor information in the brain can be altered based on experience and learning.

Myelination: Behavioral training can influence the myelination of axons, which enhances the speed and efficiency of nerve signal transmission.

Neurotransmitter Release and Receptor Sensitivity: Training can affect the release of neurotransmitters and the sensitivity of receptors, influencing the communication between neurons.

For example, if an individual undergoes behavioral training to improve a specific skill, such as playing a musical instrument or mastering a language, structural changes may occur in the brain regions associated with that particular skill. The neurons involved in the skill may form stronger connections, and the brain may undergo modifications to optimize the neural circuits for improved performance.

It’s important to note that the specific changes in the brain depend on the nature of the behavioral training, the duration and intensity of the training, and individual differences. Neuroplasticity underscores the brain’s adaptability, highlighting the potential for lifelong learning and the impact of experiences on cognitive function and behavior.

Shervan K Shahhian

The Emotional Brain, an explanation:

The Emotional Brain, an explanation:

The term “emotional brain” is often used to refer to the limbic system, a complex network of structures in the brain that are involved in processing emotions and forming emotional responses.

The limbic system plays a crucial role in regulating various emotional and motivational behaviors. Some key components of the limbic system include:

Amygdala: The amygdala is a small, almond-shaped structure that is particularly important in the processing of emotions such as fear and pleasure. It is involved in the formation of emotional memories and the generation of emotional responses.

Hippocampus: While primarily associated with memory formation, the hippocampus also interacts with the amygdala and other brain regions to influence emotional responses and stress regulation.

Hypothalamus: The hypothalamus is involved in the regulation of various bodily functions, including the release of hormones that influence emotions and stress responses.

Thalamus: The thalamus acts as a relay station for sensory information, transmitting signals between different brain regions. It plays a role in directing sensory information to the appropriate areas of the brain for processing, including those related to emotions.

These structures work together to process and regulate emotions, including fear, pleasure, and other basic emotional experiences. It’s important to note that the concept of the emotional brain is a simplification, as emotions involve complex interactions between multiple brain regions and are influenced by various factors, including genetics, environment, and personal experiences.

Shervan K Shahhian

Understanding Reticular Activating System:

Understanding Reticular activating system:

The Reticular Activating System (RAS) is a complex network of nuclei and pathways in the brainstem that plays a crucial role in regulating arousal, attention, and consciousness. It is involved in filtering and processing sensory information, helping to determine what information is relayed to higher brain regions for further processing.

Key functions of the Reticular Activating System include:

Arousal and Alertness: The RAS is responsible for maintaining a state of wakefulness and alertness. It receives input from various sensory systems and helps prioritize and amplify relevant stimuli, promoting an awake and attentive state.

Attention and Focus: The RAS filters incoming sensory information, allowing important stimuli to capture attention while filtering out irrelevant information. This process helps in directing attention to stimuli that are deemed significant or potentially threatening.

Regulation of Sleep and Wakefulness: The RAS is involved in the regulation of the sleep-wake cycle. It promotes wakefulness during the day and plays a role in the transitions between different sleep stages during the night.

Integration of Sensory Information: The RAS receives input from various sensory systems, including visual, auditory, and somatosensory inputs. It integrates and processes this information to contribute to a coherent perception of the environment.

Modulation of Motor Functions: The RAS influences motor functions by regulating muscle tone and activity levels. It contributes to the coordination of movements and motor responses.

The Reticular Activating System is not a single, isolated structure but rather a network of nuclei and pathways that extend throughout the brainstem. It connects to various higher brain regions, including the thalamus and cortex, allowing it to influence higher cognitive functions.

Understanding the Reticular Activating System is crucial in the fields of neuroscience and psychology, as it provides insights into the mechanisms underlying attention, consciousness, and overall cognitive functioning. Dysregulation of the RAS can be associated with conditions such as sleep disorders, attention disorders, and alterations in arousal states.

Shervan K Shahhian

Response Inhibition, what is it:

Response Inhibition, what is it:

Response inhibition refers to the ability to suppress or control one’s impulsive or automatic responses to stimuli. It is a cognitive function that plays a crucial role in various aspects of behavior and decision-making. Essentially, response inhibition involves the ability to stop, delay, or override a prepotent or dominant response in order to perform a more appropriate or adaptive action.

This cognitive skill is particularly important in situations where it is necessary to resist distractions, ignore irrelevant information, or refrain from engaging in impulsive behaviors. Response inhibition is a key component of executive functions, which are higher-level cognitive processes that help individuals regulate their thoughts, emotions, and actions to achieve goals and adapt to changing environments.

Research suggests that deficits in response inhibition may be associated with certain neurological and psychiatric conditions, such as attention deficit hyperactivity disorder (ADHD), impulse control disorders, and substance abuse disorders. Assessing and understanding response inhibition can be valuable in various fields, including psychology, neuroscience, and education, as it contributes to our understanding of human behavior and decision-making processes.

Shervan K Shahhian

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Inhibitory Control, what does that mean:

Inhibitory Control, what does that mean:

Inhibitory control refers to the ability to suppress or control one’s impulses, behaviors, or thoughts in order to achieve a specific goal or maintain focus. It is a cognitive function that plays a crucial role in self-regulation and executive functioning. Individuals with strong inhibitory control can resist distractions, delay gratification, and override automatic or impulsive responses.

This cognitive function is often associated with the prefrontal cortex, a part of the brain responsible for higher-order cognitive processes. Inhibitory control is essential for various everyday tasks and social interactions, as it helps individuals regulate their behavior, make thoughtful decisions, and navigate complex situations.

Impaired inhibitory control can be observed in conditions such as attention deficit hyperactivity disorder (ADHD), where individuals may struggle with impulsivity and have difficulty suppressing irrelevant thoughts or actions. Training and enhancing inhibitory control skills are common components of interventions aimed at improving cognitive functioning and self-regulation.

Shervan K Shahhian