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Flashcards in Psych/Soc Class 7 Deck (70)
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1

Sensing of Visual Stimuli

1. Stimuli from left visual field will be sent to right side of each retina
2. Regardless of which eye, it will travel to the right hemisphere (if from left eye, it will cross over at the optic chiasm)

1. Stimuli from right visual field will be sent to left side of each retina
2. regardless of which eye, it will travel to the left hemisphere (if from right eye, it will cross over at the optic chiasm)

2

Amygdala

Deals with emotional responses like fear and anger

3

Superior colliculus

Known for eye movement

4

Sensing of Auditory Stimuli

When you hear a sound, the waves hit the auricle > travels through external auditory canal > hits tympanic membrane > hits the 3 bones > neutrotransmitters activate auditory neurons then goes through brain

5

Sound travelling through right ear/ left ear

Goes through cochlear nucleus then at brainstem, it crosses over to auditory cortex on left side hemisphere / right side hemisphere if travelling from left ear

6

Sensing of Gustatory Stimuli

Information about taste is transmitted via cranial nerves to an area in the brain in temporal lobe(not far from where brain receives olfactory information)

- Stimulus is processed in gustatory cortex in insula
- Processes emotions of disgust too

7

Taste receptors

= "taste buds"
Can recognize 5 stimuli: bitter, salt, sweet, sour, umami

Made of specialized epithelial cells which have pores with taste hairs that detect food chemicals

8

Sensation vs Perception

Sensation is the ENCODING of physical energy from environment

Perception is the DECODING of sensations through selection, organization & interpretation

9

Psychophysics

study of how physical stimuli are translated into a psychological experience

10

Different stimuli we can detect

taste, smell, touch, pain, sound, light

11

Sensing of olfactory stimuli

1. Olfactory receptors found in roof of nasal pharynx
2. Receptors detect airborne chemicals that dissolve in mucus covering nasal membrane
3. Olfactory nerves project directly to olfactory bulb of brain which is located in temporal lobe near limbic system

12

Sensing of bodily stimuli

Body senses tactile information to somatosensory cortex through neural pathways to spinal cord, brain stem & thalamus

13

Somatosensory cortex

part of the nervous system that integrates touch, pressure, temperature & pain

14

Primary somatosensory area

The primary cortex for touch sensations and is located in lateral post-central gyrus which is prominent structure in parietal lobe
- detects touch

15

Premotor cortex

Responsible for some motor control
- located anterior to primary motor cortex

16

Primary motor cortex

Main contributor to generate neural impulses that pass down to spinal cord & control execution of movement
- located in anterior paracentral lobule on medial surface

17

Kinethesis

AKA proprioception
-- allows us to sense position of limbs in space as well as detect bodily movements

18

Mechanoreceptors

Detect mechanical disturbances like pressure or distortion

19

Proprioceptors

Respond to physical disturbances in body

20

Wernicke's Area

Comprehension of speech
- Also known as fluent aphasia, receptive aphasia, wernicke's aphasia
- located in posterior superior temporal gyrus
- non coherent (not easy to understand)

21

Broca's Area

Production of speech
- Also known as non-fluent aphasia, broca's aphasia, expressive aphasia
- located in inferior frontal gyrus
- coherent (easy to understand)

22

Ventral stream vs dorsal stream

Ventral stream - processes what objects are in temporal lobe

Dorsal stream - processes where objects are located in parietal lobe

23

What system is located in the most forward & underpart of brain?

Olfactory system

24

Split Brain

Corpus callosum is severed

25

Blindsight

Ability to accurately guess what an object is without consciously seeing it
Usually happens in patients with primary visual cortex damage

26

Agnosia

Inability to process sensory information
- Caused by damage to occipitotemporal border
- NOT memory loss

27

Frontal Lobe

Personality
Concentration, planning, problem solving
Language production
Emotional reaction
Speech
Smell
Voluntary movement

28

Temporal Lobe

Language comprehension
LTM
Face recognition
Hearing

29

Parietal Lobe

Touch
Pressure
Taste
Body awareness

30

Occipital Lobe

Visual processing